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Saturday, January 10, 2009

Imation India Pvt. Ltd. has announced the availability in India of the TDK LoR's (Life on Record) new Blu-ray Discs capable of recording at 4x speed. The four new TDK LoR Blu-ray Discs include the BD-R25 (single-sided, single-layer, 25GB) and BD-R50 (single-sided, dual-layer, 50GB) write-once type discs, as well as the BD-RE25 (single-sided, single-layer, 25GB) and BD-RE50 (single-sided, dual-layer, 50GB) rewritable discs.

The press release said TDK LoR Blu-ray Discs incorporate a recording layer comprised of inorganic material. The discs are further highlighted by TDK LoR's exclusive DURABIS 2 hard coating technology, an ultra-smooth cover layer created through the innovative spin coating method, and a host of other advanced TDK LoR technologies that enable the creation of high-reliability media.

A TDK LoR 4x 25GB Blu-ray Disc can be fully recorded in 22 minutes, and a TDK LoR 4x 50GB Blu-ray Disc can be fully recorded in 45 minutes, cutting the recording time in half in comparison to 2x Blu-ray Disc media.

A recording layer boasting high sensitivity is utilized for compatibility with 4x recording (144Mbps transfer rate). 4x recording reduces recording time by half compared with the previous 2x disc. 4.7GB of data can be copied in less than 5 minutes, which is comparable to a DVD-R recording speed of 16x.

Since the area of the laser spot on the Blu-ray Disc is small (about one-fifth that of the DVD), scratches or dirt on the recording surface can have an especially detrimental effect, causing errors. DURABIS 2 overcomes the issue by offering significantly higher resistance to scratches, and exceptional resistance to dirt and grime (particularly fingerprint smudges).

Previous write-once optical media such as CD-R and DVD-R utilized organic dye for their recording layers. Write-once type BD-R media is based on a completely new concept for the recording material wherein a two-layer structure composed of silicon (Si) and copper alloy (Cu) inorganic materials is utilized. When heated by the recording laser beam, these melt and the Si and Cu alloy become a composite to form recording marks. Because the material is inorganic, it is not affected by light, and offers superior archivability.